S
M
T
W
T
F
S
31
76°
45°
1
77°
49°
2
76°
50°
3
86°
54°
4
89°
59°
5
93°
66°
6
94°
69°
7
86°
63°
8
77°
57°
9
77°
59°
10
81°
62°
11
91°
68°
12
85°
64°
13
83°
61°
14
86°
63°
15
83°
65°
16
84°
61°
17
77°
58°
18
81°
65°
19
85°
65°
20
83°
64°
21
86°
61°
22
80°
59°
23
79°
59°
24
81°
66°
25
87°
68°
26
87°
65°
27
86°
61°
28
81°
62°
29
82°
64°
30
80°
61°
1
82°
62°
2
81°
61°
3
84°
62°
4
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grantham
Grantham's June 2026 forecast shows daily high temperatures ranging from 77° to 94°, with overnight lows between 54° and 69°. The average high for June is 84° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Grantham. See also: July | August | September.
